Guillermo Samperio-Ramos

ORCID: 0000-0003-3493-076X
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About
Contact & Profiles
Research Areas
  • Ocean Acidification Effects and Responses
  • Marine and coastal ecosystems
  • Geochemistry and Elemental Analysis
  • Marine Bivalve and Aquaculture Studies
  • Algal biology and biofuel production
  • Marine and coastal plant biology
  • Wastewater Treatment and Nitrogen Removal
  • Coastal wetland ecosystem dynamics
  • Microbial Fuel Cells and Bioremediation
  • Heavy metals in environment
  • Marine Biology and Ecology Research
  • Polar Research and Ecology
  • Hydrocarbon exploration and reservoir analysis
  • Coastal and Marine Management
  • Advanced oxidation water treatment
  • Microbial Community Ecology and Physiology
  • Iron oxide chemistry and applications
  • Calcium Carbonate Crystallization and Inhibition
  • Oceanographic and Atmospheric Processes
  • Environmental Toxicology and Ecotoxicology
  • Marine and fisheries research
  • Aquaculture Nutrition and Growth
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Chromium effects and bioremediation
  • Geochemistry and Geologic Mapping

Universidad Autónoma de Baja California
2022-2024

Universidad de Las Palmas de Gran Canaria
2015-2018

Mediterranean Institute for Advanced Studies
2015

The variability in the extracellular release of organic ligands by <em>Emiliania huxleyi</em> under four different pCO<sub>2</sub> scenarios (225, 350, 600 and 900 μatm), was determined. Growth batch cultures promoted enriching them only with major nutrients low iron concentrations. No chelating agents were added to control metal speciation. During initial (IP), exponential (EP) steady (SP) phases, rates, normalized per cell day, dissolved carbon (DOC<em><sub>ER</sub></em>), phenolic...

10.3934/environsci.2017.6.788 article EN cc-by AIMS environmental science 2017-01-01

The potential effect of ocean acidification on the exudation organic matter by phytoplankton and, consequently, iron redox chemistry is largely unknown. In this study, cocccolithophorid Emiliania huxleyi was exposed to different pCO2 conditions (225-900 μatm), in order determine role natural ligands Fe(II) oxidation rate. Oxidation kinetics were studied as a function pH (7.75-8.25) and dissolved carbon levels produced (0-141.11 μmol C L-1) during growth stages. rate always decreased presence...

10.3389/fmars.2018.00210 article EN cc-by Frontiers in Marine Science 2018-06-15

Abstract. Global environmental changes strongly affect the growth and biochemical composition of microalgae. Cultures coccolithophore Emiliania huxleyi were grown under four different CO2-controlled pH conditions (7.75, 7.90, 8.10, 8.25) to improve understanding adaptive mechanisms these organisms through in phenolic compounds carbohydrate content ocean acidification (OA) scenarios. The highest algal biomass peaks, 1.07 (± 0.10) 1.04 0.06) × 108 cells L−1, observed microcosms with...

10.5194/bg-2024-1 preprint EN cc-by 2024-03-05

La desnitrificación es la principal vía por cual el nitrógeno fijado se pierde en los sistemas marinos y consiste respiración secuencial de nitrato a molecular través diversos microorganismos heterótrofos. Ya que sedimentos estuarinos representan un nicho importante para desnitrificación, este estudio evaluó distribución actividad potencial bacterias desnitrificantes aerobias aisladas 2 profundidades hábitats (con pastos Zostera marina sin pastos) lo largo transecto Bahía San Quintín...

10.7773/cm.y2024.3459 article ES cc-by Ciencias Marinas 2024-08-02

Abstract. Cultures of the coccolithophore Emiliania huxleyi were grown under four different CO2-controlled pH conditions (7.75, 7.90, 8.10, and 8.25) to explore variations in extra- intracellular polyphenols carbohydrates response ocean acidification scenarios. Acidification did not significantly affect final cell densities carbohydrate contents. Intra- extracellular phenolic compounds identified quantified by reverse-phase high-performance liquid chromatography (RP-HPLC), with highest...

10.5194/bg-21-4381-2024 article EN cc-by Biogeosciences 2024-10-10
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